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If I have a site that has a PR6 index and I add 100 pages to the site and link to all of them from the index then all of them will probably be PR5. If I link back to the index from all 100 pages then do I get 100 PR5 links to my index?
If I have a site with a PR6 index and I add 1000 new pages and link to 100 of them from the index, and each page links to 9 other pages (100+900=1000) then do I get 100 PR5 links and 900 PR4 links?
Am I missing something obvious? From what I know about PR this should be the case but I just can't believe it being that easy. Gaining PR for the index would be as simple as adding pages, giving them PR from another page and linking them back to the index. But then again I know it's increasing difficult to attain higher PR (the more you have the harder it is to get to the next level). So doing this probably wouldn't push a PR6 page up to a PR7 anyways.
But what if instead of linking the 900 pages back to the index I linked them to a new site instead. Surely it would give the new site a PR of 6?
Just hoping to confirm this or pick up something I might be leaving out. Please correct me if I'm wrong.
Thanks.
> If I link back to the index from all 100 pages then do I get 100 PR5 links to my index?
Yes, assuming they get crawled (which they would).
If 1 PR 6 links to 100 PR5s which link to 9 PR4s, all linking also to the home page, then you get 100 PR5 links and 900 PR4 links to your home page.
> Gaining PR for the index would be as simple as adding pages
In your second example, your home page would end up with less PR than in your first example.
In your first example, your home page would end up with only as much PR as if it linked to one page that linked back.
> But what if instead of linking the 900 pages back to the index I linked them to a new site instead. Surely it would give the new site a PR of 6?
Probably so. The new site would get slightly less PR than if the home page was just one link to the new site (assuming that in the earlier examples, the links are only those described). If the new is just one page, with just one link which points at the old site, then both would benefit from the feedback loop.
You're just passing PR round in these examples, not creating it (though you harvest it when you have a loop). Note that due to the rank source, feedback loops quickly dissipate PR; on the Toolbar's log scale the effect is small (less than one notch).